Amplifier



FIG. 1 is a top, left perspective view of an amplifier embodying the new design.

FIG. 2 is a top, right perspective view thereof.

FIG. 3 is a bottom, left perspective view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a back view thereof.

FIG. 6 is a left view thereof.

FIG. 7 is a right view thereof.

FIG. 8 is a top view thereof; and,

FIG. 9 is a bottom view thereof.

Broken lines are used to illustrate features of the amplifier that form no part of the claimed design. Shade lines in the figures show contour and not surface ornamentation. 

CLAIM The ornamental design for an amplifier, as shown and described. 